๐Ÿ›ก๏ธ

Content Protected

Screenshots and recording are not allowed.

Click anywhere or refocus to continue

Human Evolution_Unsolved Paper

Class 10

Chapter: Heredity and Evolution | Topic: Human Evolution

Study Material.
Class 10

HUMAN EVOLUTION_UNSOLVED PAPER

Topic: Human Evolution

Time: 90 mins | Marks: 45 | Difficulty: Medium
multiple choice question

Q1. Human evolution refers to:

  1. The development of humans over generations from earlier ancestral populations
  2. The growth of a human from childhood to adulthood
  3. The formation of new organs during one person's lifetime
  4. A process that occurs only during human birth

Q2. Which evidence can help scientists study human evolution?

  1. Fossils
  2. Daily weather reports
  3. Modern clothing styles
  4. Personal preferences

Q3.Which characteristic is commonly associated with the evolutionary development of humans?

  1. Increasing importance of upright walking and changes in brain capacity
  2. Complete absence of variations
  3. Loss of all forms of communication
  4. Dependence only on aquatic habitats

Q4.Why are fossils of ancient human ancestors important?

  1. They provide clues about physical characteristics of earlier populations
  2. They reveal the complete history of every individual human
  3. They show that modern humans never changed
  4. They provide information about future human evolution

Q5.Which statement about human evolution is most appropriate?

  1. Human evolution involved changes occurring over many generations
  2. Modern humans appeared suddenly without any evolutionary history
  3. Human evolution occurred entirely within a single generation
  4. Human evolution stopped all variation among humans

Q6.Which combination provides useful evidence for studying human evolutionary relationships?

  1. Fossils, DNA comparisons, and anatomical features
  2. Clothing, food preferences, and hobbies
  3. Height measurements from one classroom only
  4. Modern technology and social media activity

Short questions

Q1. What is meant by human evolution?

Q2. Why are fossils important in understanding the evolutionary history of humans?

Q3. How can similarities in DNA help scientists study relationships between humans and other organisms?

Q4. Mention two important changes that scientists study when investigating human evolution.

Q5. During a school science project, students compare skull models representing different stages of human evolution.

What types of differences might they look for when studying these models?

Q6. India has archaeological and fossil evidence from different periods of human history. Why is studying such evidence useful for understanding the development and movement of human populations?

long questions

Q1. Explain how fossil evidence, anatomical features, and molecular evidence can be used together to study human evolution.

Q2. Describe the importance of upright walking, changes in the skull and brain, and development of tools in the study of human evolutionary history.

Q3. Scientists discover two ancient human fossils from different geological periods. The younger fossil shows changes in skull structure and body proportions compared with the older fossil.

Explain how scientists could use such evidence to investigate evolutionary changes in the human lineage.

application-based questions

Q1. A researcher records the estimated ages of four fossil specimens:

Specimen

Estimated Age

A

2.5 million years

B

1.8 million years

C

800,000 years

D

200,000 years

a) Arrange the specimens from oldest to youngest.
b) Calculate the age difference between Specimen A and Specimen D.

Q2. A researcher studies skull measurements from two ancient populations.

Population

Average Skull Capacity

Population X

900 cmยณ

Population Y

1,300 cmยณ

a) Calculate the difference in average skull capacity.
b) Calculate the percentage increase from Population X to Population Y

 

Q3. Scientists compare a particular DNA segment containing 500 base pairs between two populations. They find 25 base-pair differences.

a) What percentage of the DNA segment differs between the populations?
b) What percentage is similar?

Total: 45 Marks | Time: 90 mins

Explore more topics in Heredity and Evolution